Improvement in setting steam-boilers



UNITED STATES PATENT OFFICE.

JOHN OHILGOTI, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN SETTING STEAM-BOILERS.

Speeilication forming part of Letters Patent No. 50,221, dated October 3, 1865, antedated September 18, 1865.

To all whom it may concern:

Be it known that I, JOHN OHILGOTT, of No. 70 Fulton street, in the city ot' Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Setting Steam-Boilers; and I do hereby declare that the following is a'full, clear, and exact description ofthe saine, reference being had to the accompanying drawings, forming part of this specitication, in which- Figure 1 is a transverse vertical section ot' a tubular boiler and its setting with my improvements. Fig. 2 is a longitudinal vertical section ot' the same in the plane indicated in the line m w in Fig. 1. Fig.3 is a longitudinal vertical section in the plane indicated by the line y y in Fig. 1. Fig.4 is a horizontal section of the same in the plane indicated by the line z z in Figs. l, 2, and 3. Fig. 5 is a plan ofthe same with the top ofthe setting removed.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to economize fuel.

One feature of the invention consists in a novel arrangement of tubular water and steam spaces, partitions, and lines, whereby I provide for a horizontal and vertical circulation of the gaseous products of combustion between the tubes.

Another feature of the invention consists in providing within the sides, back, and top ofthe outside setting of a boiler a continuons system ot' lines, through which the gaseous products of combustion will circulate many times back and forth around and over the boiler before escaping to the smoke-stack.

lo enable others skilled in the art to make and use my invention, I will proceed to de scribe its construction and operation.

A A AZ A3 are the tubes which constitute the water and steam spaces of the boiler, arranged in any number of horizontal tiers, one tier above another. Two tiers only are represented. rIhese tubes are to be connected either inside or outside of the setting B, which incloses the several tiers of tubes and the rechamber G, which is below them. The several tiers are arranged at such distances from each other as to provide for the formation of ues D D between them; but the tubes in each tier are arranged so close together as to prevent the gaseous products of combustion from passing between them in any quantity.

E is acentral vertical partition, ofiron or rebrick, parallel with the tubes, and extending from the lower -tier up to the top of the setting, dividing the space between each two tiers of tubes into two flues.

F F are vertical partitions parallel with the 4partition E in the space between the highest tier of tubes and the top of the setting. The three partitions E F F divide the space last mentioned into four flues, G G G2 G3.

To provide for the circulation of the gases through the several tlues, the tubes A are made shorter than A', and one ofthe tubes A2 shorter than the other and than A3, thus leaving vertical openings ot and a2 at the rear ends of A and A2, and openings a. c3 c4 c5 are made at the front and rear of the partition E and at the front ends of the partitions F F. The gaseous products'of combustion pass from the rear ofthe fire-chamber vertically through the opening a; thence horizontally forward through the flue I), between the tubes A of the lower tier and those A3 of the upper one, thence laterally through the opening a in the partition E; thence horizontally backward through the line D', between the tubes A' of the lower tier and A2 ofthe upper tier; thence vertically through the opening a?, and thence forward and backward alternately through the fines G G G2 G3, either directly to the smoke-stack or from the ue G3, upward through an opening, b, Fig. 5, to the system of ues in the setting B, as represented.

rIhe setting B is made either of cast-iron or brick-work, with its sides, back, and top hollow, and is divided by partitions c c in the top and d d in the sides and back in such manner as to form a continuous system of flues, I I, in the top and J J in the sides and back. The gases, after all passing through the opening a2, pass successively through the several lines I I in the top of the setting, as indicated by arrows in Fig. 5, and thence down through an opening, d, into the uppermost flue, J, along which they pass iirst along one side of the setting,then along the back, and afterward along the other side, descending through an opening, c, into the next Hue J below, and so on in opposite directions alternately', as indicated by arrows in Fig. 3, through all the lues J J to the bottom of the setting, escaping from the lowest iiue to the smoke-stack K. By this system of ues in the setting all the available heat from the gaseous products of combustion is utilized, and the said products, before escapin gto the smokestack, have been so Vfar reduced in tempera-l ture as to be incapable of coutributin g further to the heating ofthe boiler.

To provide for a direct draft from the lirechalnber to the smoke-stack K, when desired, there is an opening, f, Fig. 1, in the lower part of the stack. This opening is to be closed when the gases are required to pass through the ues. To provide for the escape of the gases at the top of the setting Without their entering the flues J J, when desired, there is a second smoke-stack, L, which is closed when the products are to pass through J J.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. Thearrangementof water and steam tubes A Al A2 A3, partitions E F Fl F2 F3, and ues D D G G G2, substantially as herein specified, whereby a horizontal and vertical circulation of the gases of' combustion between the tubes is provided for.

2. Providing in the top, sides, and back oi the outside setting of a boiler a continuous system of lues, I I and J J, whereby the gas'- eous products of combustion are caused to circulate many times back and forth through the setting, substantially as herein described.

JOHN CHILCOTT. Witnesses:

HIPPOLYTE MALI, J. W. GooMBs. 

